diff --git a/package-lock.json b/package-lock.json
index 8f36820..dadd2e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "jackall",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 215ec11..2c5eddd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jackall",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "async/await for optimistic concurrency control.",
   "main": "index.js",
   "dependencies": {},